Originally posted by: apple08

dear aix gurus,
if i want to mirror the internal disc (currently our internal disc server is not mirror),what are the steps. appreciate you can improvised my steps:

1. extendvg rootvg hdisk2
2. smit vg and then mirrot vg

hope to hear from you. thank you

Originally posted by: orphy

It took me < 2 minutes to find this article, maybe you could try some searches the next time around as well.

http://www-1.ibm.com/support/docview.wss?uid=isg3T1000358
Orphy

Originally posted by: jvk

yes, you're on right way.
"smitty mirrorvg" uses the /usr/sbin/mirrorvg rootvg command and
"man mirrorvg" gives you some more info. Good luck!

Originally posted by: apple08

dear aix guru,
can i mirrored disc must be identical in size. if our original rootvg is 146GB and new hdisk is 200 GB. is it good to mirror. or we must take the hdisk of 146GB also? as to mirror the rootvg is not that direct, if later on our rootvg is 98%utilised and we wanted to increase the rootvg, is is true my steps:
unmirror the rootvg
extend the invidual rootvg hdisk
then mirror back again the new extended disc rootvg
hope to hear from you. thanks a lot for your continous learning. happy teachers day

Originally posted by: orphy

No, they don't have to be same size but they do have to be big enough to hold the data. However, unless you put non-OS data in rootvg, you shouldn't run out of space on your disks.

If you do run out of space, you could do a 3rd mirror to the 3rd disk and then remove either the 1st or the 2nd copy and you are all set.
Orphy

Originally posted by: apple08

noted, thank you.